Cortland, NY – The suspicious white powder whose arrival on an envelope Tuesday caused officials to lock down the Cortland County Jail now is believed to have been baby powder, the county sheriff’s office said.

The state's Wadsworth Center biodefense laboratory in Albany had not completed its three-part test on the powder as of this morning, but preliminary tests were negative for any biological hazard, sheriff’s officials said.

“The investigation is continuing, but at this time the powdery substance is believed to be baby powder,” officials said.

A corrections officer checking incoming mail Tuesday noticed the powder on an envelope addressed to an inmate. Officials locked down the jail, called in the Cortland Fire Department and sent four officers to Upstate University Hospital in Syracuse to be checked.